- Known or suspected congenital or acquired immunodeficiency, immunosuppressive therapy such as anti-cancer chemotherapy or radiation therapy within the preceding 6 months prior to the first vaccination, or long- term (at least 2 weeks within the previous 3 months) systemic corticosteroids therapy (at a dose of at least 0.5 milligram per kilogram per day [mg/kg/day]) prior to the first vaccination.